chore(bindings): update docsrs_bindings.rs to PHP 8.4

Refs: #447

Author: Xenira

build.rs

@@ -325,8 +325,7 @@ fn main() -> Result<()> {
     if env::var("DOCS_RS").is_ok() {
         println!("cargo:warning=docs.rs detected - using stub bindings");
         println!("cargo:rustc-cfg=php_debug");
-        println!("cargo:rustc-cfg=php81");
-        println!("cargo:rustc-cfg=php82");
+        println!("cargo:rustc-cfg=php84");
         std::fs::copy("docsrs_bindings.rs", out_path)
             .expect("failed to copy docs.rs stub bindings to out directory");
         return Ok(());